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4 years ago

Which expression is a factor of 2xy + 6x − 3y − 9? y − 3 2x + 3y x + 3 2x − 3

Mathematics

2 answers:

Sergeu [11.5K]4 years ago

7 0

Answer:

$2x - 3$

Step-by-step explanation:

The given expression is

$2xy+ 6x - 3y - 9$

Let us factor the expression.

Factor the GCF of each pair;

$2x(y + 3) - 3(y + 3)$

Factor again to obtain:

$(y + 3)(2x - 3)$

The correct choice is 2x-3

REY [17]4 years ago

3 0

Answer: D) 2x - 3

Step-by-step explanation:

Factor using the Grouping Method

2xy + 6x + -3y - 9

2x(y + 3) + -3(y + 3)

Since they have a common factor (y + 3), the grouping method can be used - the outside is one factor and the common factor is the other.

⇒ (2x - 3)(y + 3)

2x - 3 is provided as one of the options. y + 3 is not given as an option

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An architect draws a blueprint of a house. He draws the living room on the blueprint as 4.5 in. long by 6 in. wide with a scale

s2008m [1.1K]

Answer:

the answer is 8.5

Step-by-step explanation:

yeet

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3 years ago

Read 2 more answers

Decide whether each table could represent a proportional relationship. If the

Ymorist [56]

Answer:

Step-by-step explanation:

If given tables in the picture show the proportional relationship,

Number of wheels (w) ∝ Number of buses (b)

w ∝ b

w = kb

Here, k = proportionality constant

k = $\frac{w}{b}$

Number of buses (b) Number wheels (w) Wheels per bus $(\frac{w}{b})$

5 30 $\frac{30}{5}=6$

8 48 $\frac{48}{8}=6$

10 60 $\frac{60}{10}=6$

15 90 $\frac{90}{15}=6$

Here, proportionality constant is 6.

Similarly, If number of wheels (w) ∝ Number of train cars (t)

w = kt

Here, k = proportionality constant

k = $\frac{w}{t}$

Number of train cars(t) Number of wheels(w) Wheels per train car ( $\frac{w}{t}$ )

20 184 $\frac{184}{20}=9.2$

30 264 $\frac{264}{30}=8.8$

40 344 $\frac{344}{40}=8.6$

50 424 $\frac{424}{50}=8.48$

Since, ratio of w and t is not constant, relation between number of wheels and number of train cars is not proportional.

5 0

3 years ago

Approximately how much do i save per bottel of juice if i buy a pack of 8 rather than a pack of 6

Korolek [52]

Answer: Your question is missing information but this is what you do to answer your question step by step

B = Cost of 8 pack / 8 bottles = $ Cost of 8 pack/ 8 =$ ____ per bottle

A = Cost of 6 pack/ 6 bottles = $ Cost of 6 pack/ 6= $ ____ per bottle

then do a simple subtraction A -B = savings

Step-by-step explanation: Information is incomplete

if an 8 pack cost $16

If the 6 pack cost $15

All you do is a simple subtraction after calculations

Cost of 8 pack / 8 bottles = $16/8 =$2 per bottle

Cost of 6 pack/ 6 bottles = $15/ 6= $2.50 per bottle

in my example

You would save $ 0.50 per bottle by purchasing the 8 pack

6 0

3 years ago

URGENT: HELP NEEDED NOW PLEASE :(

boyakko [2]

1) -(5.8x14) = -406/5 = -81.2
2) (-1/3)(-1) = 1/3 = 0.3333333....
3) -2 + 1/4 / 1 + 1/2
-7/4 / 3/2
-1.75 / 1.5 = -7/6 = -1.166....7

What do you mean by “and”?????
Is it divided or add??
I’m only sure about the first one but tell me what and mean

7 0

3 years ago

If the supplies cost $1.50 per jar and he has a markup of 90% what price dose he sell it for ?

prisoha [69]

Answer:

2.85

Step-by-step explanation:

100%->1.50

1%->0.015

190%->2.85

7 0

3 years ago